Support arm with an extension



FIG. 1 is a front perspective view of a support arm with an extension, in a lower position.

FIG. 2 is a rear perspective view thereof.

FIG. 3 is a top view thereof.

FIG. 4 is a right side view thereof.

FIG. 5 is a front view thereof.

FIG. 6 is a left side view thereof.

FIG. 7 is a bottom view thereof.

FIG. 8 is a front perspective view of the support arm with an extension, in a horizontal position.

FIG. 9 is a rear perspective view thereof.

FIG. 10 is a top view thereof.

FIG. 11 is a right side view thereof.

FIG. 12 is a front view thereof.

FIG. 13 is a left side view thereof.

FIG. 14 is a bottom view thereof.

FIG. 15 is a front perspective view of the support arm with an extension, in an upper position.

FIG. 16 is a rear perspective view thereof.

FIG. 17 is a top view thereof.

FIG. 18 is a right side view thereof.

FIG. 19 is a front view thereof.

FIG. 20 is a left side view thereof; and,

FIG. 21 is a bottom view thereof.

The broken lines in the drawings depict portions of the support arm with an extension and form no part of the claimed design. 

CLAIM The ornamental design for a support arm with an extension, as shown and described herein. 